Police arrested an 18-year-old teenager on Monday evening on suspicion of causing a violation of public order.
The arrest is linked to a so-called “prank” video on TikTok showing people entering a private house in Hackney, East London.
Police said the arrest followed an investigation into a series of video-recorded incidents “involving apparently arbitrary approaches to members of the public on the street or in transport, and entering addresses without the owners’ apparent permission”.
One video shared on social media shows a man entering a house through an open front door while someone is cleaning outside.
He then sits down on the sofa briefly before a man approaches him and asks him to leave. The video then shows the man walking away.
Metropolitan police Chief Superintendent James Conway said: “I do not underestimate the widespread upset, distress and concern these videos have caused.
“Some people have called this a ‘joke’ video, but I hope this momentous event demonstrates how seriously we have been taking this investigation since this footage began circulating online.
“A number of these videos have been produced which have affected many different people and our investigation is ongoing as we aim to build a strong picture of both the actions shown in the footage and the impact on the public.”